Call-registering system



A! LUNDELL! CALL REGISTERING SYSTEM.

Patentedfiept. 28,1920.

APPLICATION FILED SEPT. 30. 1. 18.

VUNHTED STATES PATENT OFFICE.

ALBEN E. LUNDELL, OF NEW YORK, N. Y., ASSIGNOR TO WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CALL-REGISTERING- SYSTEM.

Application filed September 30, 1318.

To all whom it may concern Be it known that I, .ALBEN E. LUNDELL, a

citizen of the United States, residin at New York, in the county of Bronx, btate of New York, have invented certain new and useful Improvements in Call-Registering Systems, of which the following is a full, clear, concise, and exact description.

This invention relates to an improvement in telephone systems and has particular reference to a service registering system for party lines, wherein calls originating in any one of a number of substations are registered and charged to the stations initiating said calls.

In registering systems for polystation lines of known construction, means have been provided for selecting a register magnet individual to a calling subscribers substation as a result of an initiated call. In order to energize the selected magnet to complete a registration of the call, further means have been provided which are operated at the completion of the talking connection either by an operator or by the act of the called subscriber in removing his receiver. Systems have also been devised wherein register magnets employed with single party lines have been operated by reversal of current.

It is proposed, in the present invention, to provide a plurality of subscribers substations with individual register means selectable upon the initiation of a call and operated by a reversal of current to register said call.

Another object resides in the provision of means for reversing the current through the magnet of the selected registering means and thereby'operating the same when the connection be ween the calling and called subscribers is established by the latter performing some act such as removing his re ceiver.

The inventive idea involved is capable of receiving a variety of expressions, one of which, for the purpose of illustrating the invention, is shown in the accompanying drawing; but it is to be expressly understood that said drawing is employed merely for illustrating the invention as a whole and not to define the limits thereof, reference being had to the appended claimsfor this purpose.

Specification of Letters Patent.

magnet a of the register A.

Patented Sept. 28, 1920.

Serial No. 256,232.

tablish a connection, relay 1 will remain deonergized and a circuit will be prepared for the differential or electrically polarized If the subscriber at B initiates a call then relay 1 is energized, cutting out the magnet a and extending the circuit through the differential magnet o of the register B. The magnets a and a are not, however, energized at this time to pull up their respective armatures a and Z2 which are not operated until the called subscriber at substation C removes his receiver, at which time current is reversed through the selected magnet in a manner to appear in the course of the description, whereupon the particular register is operated to charge the call to the individual calling subscriber.

A detailed description of the operation is as follows:

Should the subscriber at substation A initiate a call by removing his receiver from its hook, a circuit will be established from grounded battery, through the right winding of differential relay 1, winding of the slow release relay 2, back contact and inner left armature of magnet 3, conductors 4: and 5, substation apparatus A, conductors 6 and 7, outer left armature and back contact of the magnet 3, left winding of differential relay 1 to battery and ground. The windings o1 relay 1 being opposed, the relay will not pull up its armatures and the circuit through the conductor 7 will consequently be extended through the conductor 8, righthand winding of the diiierential magnet a, conductor 9, back contact and left armature of relay 1, to terminal lO of the line switch D. Slow release relay 2 will be energized by the circuit through it and will attract its armature. Ground being found upon the back contact of the armature of a relay E at the master switch, a circuit is closed for the magnet 3 which extends from grounded battery, through the right winding of magnet 3, armature and'front contact of relay 2, and armature and back contact of master switch relay E to ground. Magnet 3 will pull up the plunger 11 of the line switch and extend the circuit over the limbs 12 and 13 of the party line to permit of the operation, by the calling subscriber,

of selector switches (not shown) which may be employed in setting up a connection, and since these switches form no part of the present invention, a detailed description thereof is believed unnecessary. Magnet 3 also attracts its left-hand armatures, breaking the circuit for the relay 2, but due to the fact that this relay is slow to release, the armature thereof will not be immediately retracted. When the line is extended to the first selector switch above referred to, aground is found at said switch which completes a holding circuit for the magnet 3 extending from grounded battery, left winding of magnet 3, conductor 18 to said ground at the selector switch.

Uponextending the connection to the connector switch at the right of the drawing by the operation of the selector switches -previously referred to, the relay lt at the connector F is energized by a circuit extending from grounded battery, left-hand winding of relay 14E, outermost back contact of relay 15, conductors 12, 1 and 5, substation apparatus A, conductors 6, 7 and 8, right winding of magnet a, conductor 13, innermost back contact and armature of relay 15 and through the right winding of relay 14 to ground. Relay 141 on energizing attracts its armature and establishes a cirarmatures of said magnet a from being attracted at this time. The connector switch F is then set in the usual manner in operative relation to the called subscribers line at'substation C, and in the event that said line is not busy, a connection will be established for signaling the called subscriber in the usual manner.

The subscriber at substation 0 upon removing his receiver, energizes the relay 15 through a circuit extending from grounded battery, left-hand winding of relay 15, through I substation apparatus, right-hand winding of relay 15 to ground. Relay 15 attracts its armatures, the contacts of which are of the make-before-break type. T he energization of relay 15 causes a reversal of the current through the talking circuit which now extends from grounded battery, left winding of relay 1 1, inner armature and front contact of relay 15, conductor 13, left armature and back contact of relay 1, conductor 9, right winding of magnet a, conductors 8, 7 and 6, substation apparatus A, conductors 5, iand 12, outer armature and front contact of relay 15, right-hand winding of relay 14: to ground. As previously explained, the register magnet a. is not energized until the called subscriber answers by removing his receiver, but upon the reversal of the current through the right winding of said magnet, the same will become energized and attract its right armature to complete the talking circuit and shunt the conductor 8. The left armature a of the magnet will also pull up and thus operate the register mechanism A. A holding circuit for the magnet a, is established which extends from grounded battery, left win-ding of magnet a, conductor'19, wire 17, armature and front contact of relay 16 to ground.

If the subscriber at substation B initiates a call, a circuit will be established'through differential relay 1 in the same manner as described in connection with the initiation of a call at substation A but, owing to the fact that the signaling mechanism at substation B is grounded, the windings of the relay 1will become unbalanced and its armatures attracted. The left armature will break the circuit to register magnet a and prepare a circuitfor the register magnet b of the register B, which extends from grounded battery, the right winding of relay 1, winding of relay 2, back contact of the inner left-hand armature and magnet 3, conductors 4 and 5, substation apparatus B, conductors 6, 7 and 20, left'winding of magnet b conductor 21, front contact and left armature of relay 1 to the line switch D. The circuit is extended to the selector and connector switches in the same manner as described in connection with a call from substation A and upon the grounding of the wire 17at the front contact and armature of relay 16, a locking circuit will be established for relay 1, extending from grounded battery, right winding of relay 1, right armature and front contact thereof. conductors 22 and 19, wire 17, armature and front contact of relay 16 to ground. A circuit is also extended from grounded battery, right winding of register magnet Z2 conductors 22and 19,.wire 17, armature and front contact of IBIELYTIG to ground. After the called subscriber has completed the connection, as by removing his receiver, the current is reversed through'the left winding of magnet b,-thus causing themagnet to become energized and pull up its armatures. Its left armature completes the talking circuit and its rightarmature operates the register B to charge the call to the subscriber at B substation.

At the termination of the call in either in stance the connector switch may be returned to normal in any manner well known in the art. Relay 15 also is deenergized, permitting its armatures to fall off and upon the deenergization of the relay 14, relay 16 falls off, removing ground from the wire 17 which may in the usual manner cause the selector switches tov return to' normal. This results in the. deenergiza-tion of line switch magnet 3 and of the magnet a or b which was selected upon the initiation of the call.

- Ground being also removed from the lock ing circuit of the relay 1, in the case of a call from substationB, said relay will be deenergized and retract its armatures, whereupon the parts will all be'in normal position.

For the purpose of signaling either of the two substations A and B ascalled lines after of said substations, a ringing generator 23,

shown at the left of the figure, is connected to the circuit,= and in the normal position shown, the signaling mechanism of substation B will be operated by a circuit extending from the generator. back contact and right armature of relay 24, conductor 6, apparatus of substation B, and through the ringer thereof to ground. In signaling substation A, the relay 24 is energized in a manner well known in the art and the circuit is extended from generator 23, front contact and left armature of relay 24, conductor 5, apparatus of substation A, conductor 6, right armature and front contact of relay 24 to ground. I 7

\Vhat is claimedis: g 1. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each of said substations, means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means for reversing the current through said register mechanism to cause the operation thereof.

2. In a telephone system, a party line having a. plurality of substations, a register mechanism individual-to each of said substations, means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means actuated upon the completion of a connection for reversing the current through said register mechanism to cause the operation thereof.

3. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each of said substations, means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means automatically actuated upon the completion of a connection for reversing the current through said register mechanism to operate the same.

4. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each of said substations, means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means actuated upon the removal of the receiver of a called subscribers station for reversing the current through the selected register mechaassociated substation, and means for revers-.

ing the current through said magnet to energize the same and operate said register mechanism.

6. In a telephone system, a party line having two substations, a register mechanism individual to each substation and including a magnet, means for selecting one of said magnets upon the initiation of a call at the associated substation, and means for revers ing the current through said magnet upon the completion of a connection to energize the same and operate said register mechanism.

7. In a telephone system, a party line having two substations, a register mechanism individual to each substation and including a magnet, means for selecting one of said magnets upon the initiation of a call at the associated substation, and means automatically actuated for reversing the cur-. rent through said magnet to energize the same and operate the register mechanism.

8. In a telephone system, a party line having two substations, a register mechanism individual to each substation and including a magnet, means for selecting one of said magnets upon the initiation of a call at the associated substation, and means actuated upon the removal of the receiver of 2. called substation for reversing the current through said magnet to energize the same and operate the associated register mechanism.

9. In a telephone system, a party line having a. plurality of substations, a register mechanism individual to each of said substations, means for selecting one of said mechanisms uponthe 'i'niti'ation of Ia call at the associated-substation, and a relay for reversing the current through said register mechanism to cause the operation thereof.

10. In a telephone system, a party line having a plurality of substations, a called line, a register mechanism individual to each of said substations, means for. selecting one of said mechanisms upon the initiation of a call at the associated substation, and a relay in circuit with the called line for reversing the current through said register mechanism to cause the operation thereof.

11. In a telephone system, a party line having a plurality of substations, a called line, a register mechanism individual to each of said substations, means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and a relay in circuit with the called line and energized upon the completion of a connection to re'- includin a ma net ada JtGCl to be ener ized b b b to operatesaid mechanism, means for select ing one of said magnets upon the initiation of a call at the associated substation, and a relay for reversing the current through said magnet to energize the same.

13. In a telephone system, a party line having a plurality of substations, aregister mechanism individual to each substation and including a magnet adapted to be energized to operate said mechanism, means for selecting one of said magnets upon the initiation of a call at the associated substation, and a relay operated upon the completion of a connection to reverse. the current through said magnet and energize the same.

14. In a telephone exchange,a party line having two calling subscribers substations, a register magnet individual to each substation, a called subscribers substation, means for selecting one of said magnets upon the initiation of a call at the associated calling subscribers substation, means for connecting said calling subscribers substation to the called subscribers substation, and a relay operated upon the removal of the receiver at the called subscribers substation for reversing the current through the selected magnet, whereby the same is energized.

15. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each, means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and electromagnetic means for reversing the current through said mechanism to operate the same.

16.-In a telephone system, a party line having a plurality of substations, a register i mechanism individual to each of said substations, means common to said substations for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means for reversing the current through said register mechanism to cause the operation thereof. r

17. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each of said substations, a single means for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means actuated upon the completion of a connection for reversing the current through said register mechanism to cause the operation thereof.

18. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each of said substations, an electromagnetic device for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means automatically actuated upon the completion of a connection for reversing the current through said register mechanism to operate the same.

19. In a telephone system, a party line having a plurality of substations, a register mechanism individual to each of said substations, a differential relay for selecting one of said mechanisms upon the initiation of a call at the associated substation, and means actuated upon the removal of the receiver of a called subscribers station for reversing the current through the selected register mechanism to cause the operation thereof.

20. In a telephone system, a party line having two substations, a register mechanism individual to each substation and ineluding a magnet, a single means common to said substation for selecting one of said magnets upon the 1n1t1at1on of a call at the associated substation, and means for reversing the current through said magnetto enercluding a magnet, means independent of said substations for selecting one of said magnets upon theinitiation of a call at the associated substation, and means for reversing the current through said magnet upon the completion of a connection to energize the same and operate said register mechanism. V

In witness whereof, I hereunto subscribe any name this 6th day of September, A. D.

ALBEN E. LUNDELL. 

